client.java

import java.net.*;
import java.io.*;
import java.util.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import java.applet.*;

public class client extends JFrame implements ActionListener
{
 public static void main(String[] args)
 {
  client client_frame = new client();
  
 }

 JButton command1; //串連伺服器
 JButton command2;//使用者登入
 JButton command3;//發送資訊
 JButton command4;//尋找線上使用者
 JButton command5;//添加好友
 JButton command6;//註冊新使用者
 JButton command7;//移除朋友
 JComboBox combobox; //好友選擇
 JTextArea tal;  //本文部分
 JTextField f1; //ip地址
 JTextField f2;//伺服器連接埠
 JTextField f3;//使用者名稱
 JTextField f4;//發送的資訊
 JTextField f5;//好友名字
 JPasswordField password;
 JLabel label1;//串連伺服器標識
 JLabel label2;//使用者登入標誌
 JLabel la1 ;//表徵圖
 JLabel time_lab;//時間
 String IP = new String();
 int port;
 Socket socket;
 clientthread client;  //  @jve:decl-index=0:
 label t;
 PrintWriter out1;
 BufferedReader in1;
 AudioClip connect ; //串連伺服器音樂
 AudioClip fail ; //串連失敗音樂
 AudioClip start ; //使用者登入音樂
 AudioClip leave ; //使用者離開音樂
 AudioClip msg ; //接收資訊音樂

 public client()
 {
  Container c = getContentPane();
  Container upc = new Container();
  c.setLayout(new BorderLayout(5,5));

  c.add(upc,BorderLayout.NORTH);  //介面上部布局
  upc.setLayout(new GridLayout(2,6,15,5));
  upc.add(new JLabel("伺服器IP"));
  f1 = new JTextField("127.0.0.1");
  upc.add(f1);
  JLabel temp1 = new JLabel("連接埠");
  
  upc.add(temp1);
  temp1.setBounds(0,0,25,12);
  f2 = new JTextField("1000");
  //f2.setSize(50,10);
  upc.add(f2);
  command1 = new JButton("串連");  //串連伺服器
  command1.addActionListener(this);//事件監聽
  upc.add(command1);

  ImageIcon icon1 = new ImageIcon("1.gif");
  la1 = new JLabel(icon1);
  upc.add(la1);
  
  //upc.add(command6);
  upc.add(new JLabel("使用者名稱"));
  f3 = new JTextField(8);
  //f1.setSize(50,10);
  upc.add(f3);
  upc.add(new JLabel("密碼"));
  password = new JPasswordField(4);
  //f2.setSize(50,10);
  upc.add(password);
  command2 = new JButton("登入"); //登入按鈕
  command2.setEnabled(false);
  command2.addActionListener(this);
  upc.add(command2);
  label2 = new JLabel("未登入");
  upc.add(label2);

  Container centerc = new Container(); //介面中部布局
  c.add(centerc,BorderLayout.CENTER);
  //centerc.setLayout(new GridLayout(1,1,5,5));
  centerc.add(new JLabel("接受的資訊"));
  tal = new JTextArea();
  tal.setEditable(false);
  tal.setFont(new Font("宋體",0,15));
  
  tal.setWrapStyleWord(true);
  tal.setLineWrap(true);
  tal.setCaretPosition(0);
  JScrollPane   scroll   =   new   JScrollPane(tal,
     JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
     JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
  
  //scroll.setPreferredSize(new Dimension(400,400));
  scroll.revalidate();
  this.getContentPane().add(scroll);

  Container westc = new Container(); //介面左部布局
  c.add(westc,BorderLayout.WEST);
  westc.setLayout(new GridLayout(2,2,20,20));
  westc.add(new JLabel("接收的資訊"));
  time_lab = new JLabel();
  westc.add(time_lab);

  Container downc = new Container(); //介面下部布局
  c.add(downc,BorderLayout.SOUTH);
  downc.setLayout(new GridLayout(2,4,5,5));
  combobox = new JComboBox();
  combobox.addItem("對所有人");
  //combobox.addActionListener(this);
  downc.add(combobox);
  f4 = new JTextField();
  downc.add(f4);
  command3 = new JButton("發送資訊");
  command3.setEnabled(false);
  command3.addActionListener(this);
  downc.add(command3);
  command4 = new JButton("尋找線上使用者");
  command4.addActionListener(this);
  command4.setEnabled(false);
  downc.add(command4);
  f5 = new JTextField("在此鍵入好友名字");
  downc.add(f5);
  command5 = new JButton("添加使用者");
  command5.setEnabled(false);
  command5.addActionListener(this);
  downc.add(command5);
  command7 = new JButton("移除朋友");
  command7.setEnabled(false);
  command7.addActionListener(this);
  downc.add(command7);

  command6 = new JButton("註冊新使用者");
  command6.setEnabled(false);
  command6.addActionListener(this);
  downc.add(command6);

  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

  setSize(500,500);
  setLocation(200,150);
  setVisible(true);
     //裝載音效檔
  URL file = getClass().getResource("connect.wav"); //串連伺服器
  connect = java.applet.Applet.newAudioClip(file); //
  file = getClass().getResource("fail.wav"); //串連失敗
  fail = java.applet.Applet.newAudioClip(file); //
  file = getClass().getResource("start.wav"); //使用者登入成功
  start = java.applet.Applet.newAudioClip(file); //
  file = getClass().getResource("leave.wav"); //使用者離開
  leave = java.applet.Applet.newAudioClip(file); //
  file = getClass().getResource("msg.wav"); //收到資訊
  msg = java.applet.Applet.newAudioClip(file); //

  t= new label();
  t.start();
  
  
 }

 public void actionPerformed (ActionEvent e)
 {
  try{
  out1 = new PrintWriter(socket.getOutputStream(),true);
  in1 = new BufferedReader (new InputStreamReader(socket.getInputStream())); //接收伺服器回複資訊
 //String mess = in1.readLine();//讀取字串
 //if(mess!=null&&mess.indexOf("伺服器已停止對你的服務")!=-1);
  }
  catch(Exception f){}

  if(e.getSource()== command1)     ////////////////串連伺服器
  {
   
   connect.play();            //播放串連音樂
   socket = new Socket();
   try{
    IP = f1.getText();
   port = Integer.parseInt(f2.getText());
   
   socket.connect(new InetSocketAddress(IP,port),5000);
   Thread.sleep(1000);
   if(socket.isConnected() == true) //如果串連上
   {
    command1.setText("已連上");
    JOptionPane.showMessageDialog(null,"串連伺服器成功");
    command1.setEnabled(false);
    f1.setEditable(false);
     f2.setEditable(false);
    command2.setEnabled(true);
    command6.setEnabled(true);
   }
   }//try ends
   catch(Exception f)
   {
    fail.play();
    JOptionPane.showMessageDialog(null,"串連伺服器失敗");
   }
  }

  if(e.getSource() == command2) //////////////////////// 使用者登入或離開
  {
   try{
    if((command2.getText()).compareTo("登入") == 0)   //表示使用者登入
    {
     out1.write("2#"+f3.getText()+"#"+password.getText()+"/n");  //發送使用者名稱和密碼加上功能碼
     out1.flush();
     in1 = new BufferedReader (new InputStreamReader(socket.getInputStream())); //接收伺服器回複資訊
     String str2 = in1.readLine();
     
     if(str2.compareTo("yes")==0)   //// 登入成功
     {
      start.play();
      label2.setText("已登入");
      command2.setText("離開");
      f3.setEditable(false);
      password.setEditable(false);
      command3.setEnabled(true);
      command4.setEnabled(true);
      command5.setEnabled(true);
      command6.setEnabled(false);
      command7.setEnabled(true);
      JOptionPane.showMessageDialog(null,"登入成功");
      
      client = new clientthread();  //用戶端產生接收伺服器資訊線程
      client.start();
     }
     else
     {
      fail.play();
      JOptionPane.showMessageDialog(null,"非法使用者，登入失敗");
      f3.setText("");
      password.setText("");
     }
    }
    else                              //使用者離線
    {
     try
     {
      leave.play();
      command1.setEnabled(true);
      f1.setEditable(true);
      f2.setEditable(true);
      f3.setEditable(true);
      password.setEditable(true);
      command2.setEnabled(false);
      command3.setEnabled(false);
      command4.setEnabled(false);
      command5.setEnabled(false);
      command6.setEnabled(false);
      command7.setEnabled(false);
      tal.setText("");
      combobox.removeAllItems();
      label2.setText("未登入");
      command1.setText("串連");
      command2.setText("登入");
      JOptionPane.showMessageDialog(null,"您已和伺服器中斷連線/n如要再次串連請首先串連上伺服器");
      f3.setText("");
      password.setText("");

      if(socket.isConnected() == true)  //如果串連上
      {
       out1.write("6#"+"/n");       //給伺服器發送下線資訊
       out1.flush();
      }
      System.exit(0);
     }
     catch (Exception f)
     {
     }
    }
   }
   catch(Exception g){}
  }

  if(e.getSource() == command3)  ////////////////////發送訊息
  {
   String str1 = f4.getText();

   out1.write("3#"+combobox.getSelectedItem()+"#"+str1+"/n");
   out1.flush();
   f4.setText("");
   tal.append("發送給 "+combobox.getSelectedItem()+" : "+str1+"/n");
  }
  if(e.getSource() == command4)                  //尋找好友
  {
   out1.write("4#/n"); //發送尋找好友的功能碼
   out1.flush();
  }
  if(e.getSource() == command5)                //添加好友
  {
   String temp = f5.getText();
   combobox.addItem(temp);
   JOptionPane.showMessageDialog(null,"您已添加"+temp+"為好友/n可從下拉式功能表中選擇");
   f5.setText("在此鍵入好友名字");
  }

  if(e.getSource() == command6)  ///////////////////註冊新使用者
  {   
   final JDialog  dialog = new JDialog(this);
   Container cp = dialog.getContentPane();
   cp.setLayout(new GridLayout(3,2,5,5));
   cp.add(new JLabel("使用者名稱"));
   final JTextField t1 = new JTextField();
   cp.add(t1);
    
   cp.add(new JLabel("密碼"));
   final JTextField t2 = new JTextField();
   cp.add(t2);

   dialog.setSize(200,150);
   dialog.setLocation(500,500);

   JButton command = new JButton("確定");
   cp.add(command);
   dialog.show();
   command.addActionListener(new ActionListener()
   {
    public void actionPerformed (ActionEvent e)
    {
     try{
      out1.write("1#"+t1.getText()+"#"+t2.getText()+"/n"); //發送使用者輸入的名字和密碼
      out1.flush();
      String str2 = in1.readLine();  //讀取伺服器返回資訊
      if(str2.compareTo("1")==0) //如果註冊成功
      {
       JOptionPane.showMessageDialog(null,"註冊成功");
       dialog.dispose();
      }
      else //註冊失敗
      {
       JOptionPane.showMessageDialog(null,"該使用者名稱已存在");
      }

     }
     catch(Exception f){}
     
    }
   });

  }
  if(e.getSource() == command7)                       //移除朋友
  {
   String temp = (combobox.getSelectedItem()).toString();
   combobox.removeItem(combobox.getSelectedItem());
   JOptionPane.showMessageDialog(null,temp+"已被刪除");
  }

 }//actionperformed() ends  

 class clientthread extends Thread  //接收伺服器資訊的線程
 {
  
  clientthread()
  {  
  }
  
  public void run()
  {
   try{
   IP = f1.getText();
   port = Integer.parseInt(f2.getText());
   
   in1 = new BufferedReader (new InputStreamReader(socket.getInputStream()));

   while(true)
   {
    
      String str = in1.readLine();
      if(str==null)
    {  
       //in1.close();
    }
    else
    {
     msg.play();
       tal.append(str+"/n");
    }
   }
   }
   catch(Exception e){}

  }
 }

 class label extends Thread
 {
  ImageIcon icon[] = new ImageIcon[2];
   
  label()
  {
   
   icon[0]=new ImageIcon("1.gif");
   icon[1]=new ImageIcon("2.gif");
   
  }
  public void run()
  {
   int i=0,j=0;
   String str = "王兆東的聊天室";
   (getFrames())[0].setTitle(str);
   while(true)
   {
    try{
     sleep(200);
    }
    catch(Exception e){}
    la1.setIcon(icon[i]);
    i++;
   
    if(i==2)
     i=0;
    Date dat = new Date();
    String da = dat.toString();
    time_lab.setText(da.substring(10,19));
   }//while ends
  }//run ends
 }//class label ends

}